Interactive effects between the main components in paper‐plastic‐aluminum complex packaging wastes during the hydrothermal liquefaction process

2021 ◽  
Author(s):  
Wang Yuzhen ◽  
Wang Ying ◽  
Zhu Yitong ◽  
Fang Changqing ◽  
Xu Donghai ◽  
...  
Keyword(s):  
Hydrothermal Liquefaction ◽  
Interactive Effects ◽  
Aluminum Complex ◽  
Liquefaction Process ◽  
Main Components

A review on key design and operational parameters to optimize and develop hydrothermal liquefaction of biomass for biorefinery applications

2021 ◽  
Vol 23 (4) ◽  
pp. 1404-1446 ◽  
Author(s):  
Ibrahim Alper Basar ◽  
Huan Liu ◽  
Helene Carrere ◽  
Eric Trably ◽  
Cigdem Eskicioglu
Keyword(s):  
Process Parameters ◽  
Hydrothermal Liquefaction ◽  
Operational Parameters ◽  
Liquefaction Process

This paper summarizes the existing hydrothermal liquefaction process literature and reveals the effect of process parameters on the bio-crude yield.

scholarly journals Circumventing Unintended Impacts of Waste N95 Facemask Generated during the COVID-19 Pandemic: A Conceptual Design Approach

2020 ◽  
Vol 4 (3) ◽  
pp. 54
Author(s):  
Oseweuba Valentine Okoro ◽  
Adjoa Nkrumah Banson ◽  
Hongxia Zhang
Keyword(s):  
Environmental Performance ◽  
Electricity Generation ◽  
Fermentation Process ◽  
Combined Heat And Power ◽  
Hydrothermal Liquefaction ◽  
Process Models ◽  
Protective Equipment ◽  
Generation Process ◽  
Liquefaction Process ◽  
Waste Conversion

The global crisis arising from the current COVID-19 pandemic has resulted in a surge in the magnitude of global waste from used Personal Protective Equipment with special emphasis on waste N95 facemask. Creative approaches are therefore required to resolve the surging facemask waste disposal issue in an economical and environmentally friendly manner. In an attempt to resolve the evolving global waste challenge, the present study has assessed the economic and environmental performances of converting N95 facemasks to steam and electricity via a combined heat and power plant, to ethanol via a syngas fermentation process, and to an energy-dense gasoline-like oil product via a hydrothermal liquefaction process. These processes were assessed using “conceptual” process models developed using ASPEN plus as the process simulation tool. Economic and environment assessments were undertaken using net present values (NPVs) and the rate of potential environmental impacts (PEIs) respectively, as sufficient performance measures. Therefore, the present study was able to establish that the conversion of waste N95 facemask to syngas prior to a fermentation process for ethanol production constituted the least economical and least environmental friendly process with a negative NPV and the highest rate of PEI (1.59 PEI/h) value calculated. The NPV values calculated for N95 facemask waste conversion to steam and electricity and energy-dense oil processes were US$ 36.6 × 106 and US$ 53 × 106 respectively, suggesting the preference for the production of a valuable energy-dense oil product. Furthermore, it was observed that when the environmental performance of both processes was considered, rates of PEIs of 1.20 and 0.28 PEI/h were estimated for the energy-dense oil production process and the steam and electricity generation process, respectively. Therefore, the study was able to establish that the utilisation of waste N95 facemask for steam and electricity generation and for generating an energy-dense oil product are both promising approaches that could aid in the resolution of the waste issue if both environmental and economic performances constitute crucial considerations.

Emulsification of bio-crude produced from agricultural waste via hydrothermal liquefaction process

Fuel ◽  
2021 ◽  
Vol 305 ◽  
pp. 121602
Author(s):  
Swathi Bhat ◽  
Venu Babu Borugadda ◽  
Ajay K. Dalai
Keyword(s):  
Agricultural Waste ◽  
Hydrothermal Liquefaction ◽  
Liquefaction Process

scholarly journals Demineralization of Sargassum spp. Macroalgae Biomass: Selective Hydrothermal Liquefaction Process for Bio-Oil Production

2015 ◽  
Vol 3 ◽  
Author(s):  
Liz M. Díaz-Vázquez ◽  
Arnulfo Rojas-Pérez ◽  
Mariela Fuentes-Caraballo ◽  
Isis V. Robles ◽  
Umakanta Jena ◽  
...  
Keyword(s):  
Oil Production ◽  
Hydrothermal Liquefaction ◽  
Bio Oil ◽  
Liquefaction Process

scholarly journals ECONOMIC EVALUATION OF A HYDROTHERMAL LIQUEFACTION PROCESS

Detritus ◽  
2018 ◽  
Vol In Press (1) ◽  
pp. 1 ◽  
Author(s):  
Geert Haarlemmer ◽  
Morgane Briand ◽  
Anne Roubaud ◽  
Julien Roussely ◽  
Maxime Déniel
Keyword(s):  
Economic Evaluation ◽  
Hydrothermal Liquefaction ◽  
Liquefaction Process

Preparation, Preliminary Characterization and Antiangiogenic Activities of Polysaccharides from Pomegranate Peels

2021 ◽  
Vol 43 (5) ◽  
pp. 587-587
Author(s):  
Chunlin Ke and Zuomei Li Chunlin Ke and Zuomei Li
Keyword(s):  
Chorioallantoic Membrane ◽  
Interactive Effects ◽  
Extraction Temperature ◽  
Extraction Technology ◽  
Chick Embryo Chorioallantoic Membrane ◽  
Ft Ir ◽  
Relative Molecular Weight ◽  
Main Components ◽  
Compound Enzyme

In the present study, the crude polysaccharides from pomegranate peels (CPP) were prepared by compound enzyme-extraction technology, and the response surface methodology was used to optimize the extraction parameters. Box–Behnken design (BBD) was applied to estimate the effects of extraction temperature, extraction pH, and dosage of compound enzyme on the yield of CPP. A mathematical model with high fitness was obtained. Extraction temperature, extraction pH, and dosage of compound enzyme exhibited independent and interactive effects on CPP yield. CPP were purified by macroporous resin HP-20 and Sephadex G-100 column chromatography to afford purified fraction of CPP-2. The relative molecular weight of CPP-2 was 93.5 kDa. In CPP-2, and FT-IR spectra showed that the main components among CPP-2 may be pectic polysaccharides.The effect of CPP-2 on angiogenesis was measured in vivo by using the chick embryo chorioallantoic membrane (CAM) assay. The results demonstrated that CPP-2 suppressed angiogenesis in chicken embryos.

scholarly journals Hydrothermal liquefaction of microalgae after different pre-treatments

2018 ◽  
Vol 36 (6) ◽  
pp. 1546-1555 ◽  
Author(s):  
Mikhail S Vlaskin ◽  
Anatoly V Grigorenko ◽  
Nadezhda I Chernova ◽  
Sophia V. Kiseleva
Keyword(s):  
Constant Temperature ◽  
Research Group ◽  
Arthrospira Platensis ◽  
Hydrothermal Liquefaction ◽  
Point Of View ◽  
Water Soluble ◽  
Oil Yield ◽  
Oil Fraction ◽  
Bio Oil ◽  
Liquefaction Process

Hydrothermal liquefaction of different microalgae samples ( Arthrospira platensis cultivated by our research group) – fresh (directly after harvesting), dried and frozen – have been performed. In hydrothermal liquefaction process, the samples were heated up to 300°C for 30 min and kept at a constant temperature for 60 min. Then dichloromethane was added to the samples to extract the oil fraction. The products obtained after aqueous and dichloromethane solutions evaporation are referred to as water soluble organics and bio-oil correspondingly. The experiments on hydrothermal liquefaction of microalgae pre-treated in different ways were conducted for three independent harvest samples. The average values of bio-oil yield in the experiments with fresh, dried and frozen microalgae were equal to 44.07%, 39.97% and 39.65%, respectively. The average yields of water soluble organics were equal to 19.34%, 29.00% and 21.43% respectively. In all the experiments, the highest yield of bio-oil was reached for fresh microalgae. From this point of view, direct hydrothermal liquefaction processing of fresh microalgae seems to be more preferable that further enhances the advantage of hydrothermal liquefaction in comparison with other biomass-to-biofuel conversion methods.

Production of Bio-Crude Oil from Microalgae Chlorella sp. Using Hydrothermal Liquefaction Process

2020 ◽  
Vol 849 ◽  
pp. 14-19
Author(s):  
Aldeniro Arief Bawono ◽  
Hisyam Adhisatrio ◽  
Laras Prasakti ◽  
Yano Surya Pradana
Keyword(s):  
Crude Oil ◽  
Residence Time ◽  
Hydrothermal Liquefaction ◽  
Biofuel Production ◽  
Oil Yield ◽  
Effect Of Temperature ◽  
Low Carbon ◽  
High Oxygen Content ◽  
Liquefaction Process ◽  
Water Ratio

Currently, microalgae have attracted as potential feedstock for biofuel production. Hydrothermal liquefaction was proposed as technology to convert microalgae into bio-crude oil. Microalgae used in this study was Indonesia-cultivated Chlorella sp., This work investigated the effect of temperature (200°C, 225°C, 250°C), biomass weight-water ratio (1:20, 2:20, 3:20), and residence time (10, 20, 30 minutes) on bio-crude oil yield of non-catalytic hydrothermal liquefaction. The highest bio-crude oil yield was 2.25%, obtained at temperature of 250°C biomass weight-water ratio of 1:20, and residence time of 10 minutes. The highest component of bio-crude oil was alcohols. The low bio-crude oil yield was caused by the longer residence time of cooling step (driving gas conversion), low amount of carbon-hydrogen content and high amount of oxygen-ash content in biomass. Furthermore, the highest component of bio-crude oil was alcohols, stimulated by low carbon content coupled with high oxygen content in Chlorella sp.

Co-generation of liquid biofuels from lignocellulose by integrated biochemical and hydrothermal liquefaction process

Energy ◽  
2020 ◽  
Vol 200 ◽  
pp. 117524 ◽  
Author(s):  
Bingshuo Li ◽  
Tianhua Yang ◽  
Rundong Li ◽  
Xingping Kai
Keyword(s):  
Hydrothermal Liquefaction ◽  
Liquefaction Process
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